# CVE-2021-22331: Cross-site scripting in HUAWEI P30

> Attackers can inject JavaScript via malicious application requests on Huawei P30 devices, potentially compromising service integrity and execution.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-52g2-g3r2-x33c

## What is CVE-2021-22331?

CVE-2021-22331 is a high-severity cross-site scripting vulnerability in HUAWEI P30, published on 28 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

There is a JavaScript injection vulnerability in certain Huawei smartphones. A module does not verify some inputs sufficiently. Attackers can exploit this vulnerability by sending a malicious application request to launch JavaScript injection. This may compromise normal service. Affected product versions include HUAWEI P30 versions earlier than 10.1.0.165(C01E165R2P11), 11.0.0.118(C635E2R1P3), 11.0.0.120(C00E120R2P5), 11.0.0.138(C10E4R5P3), 11.0.0.138(C185E4R7P3), 11.0.0.138(C432E8R2P3), 11.0.0.138(C461E4R3P3), 11.0.0.138(C605E4R1P3), and 11.0.0.138(C636E4R3P3).

Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2021-22331?

It affects 1 product.


Products: Huawei P30 Firmware.

## How do I fix CVE-2021-22331?

No fix has been published for CVE-2021-22331 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22331 being exploited?

There is no known exploitation of CVE-2021-22331 in the wild and no public exploit code.

## Other vulnerabilities in HUAWEI P30

- [CVE-2020-1800](https://insights.sbomify.com/CVE-2020-1800/): Missing authorization in HUAWEI P30 (high 7.8)
- [CVE-2020-1812](https://insights.sbomify.com/CVE-2020-1812/): Auth bypass in HUAWEI P30 (high 7.8)
- [CVE-2019-5287](https://insights.sbomify.com/CVE-2019-5287/): Integer overflow in P30 (high 7.8)
- [CVE-2019-5288](https://insights.sbomify.com/CVE-2019-5288/): Integer overflow in P30 (high 7.8)
- [CVE-2019-5265](https://insights.sbomify.com/CVE-2019-5265/): Information disclosure in P30 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22331 and fix it if it is affected.

What it is: CVE-2021-22331 is a high-severity cross-site scripting vulnerability in HUAWEI P30, published on 28 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-22331 in the wild and no public exploit code.

Affected product: HUAWEI P30. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-22331/ (Markdown: https://insights.sbomify.com/CVE-2021-22331/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22331
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22331
- OSV: https://osv.dev/vulnerability/CVE-2021-22331

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22331/
Summaries are generated and may contain mistakes; the official description above is the record.